A Review of Mutual Coupling in MIMO Systems

By Xiaoming Chen, Shuai Zhang, Qinlong Li. IEEE Access, 2018

440 citations recorded by the source corpus.

This paper provides a systematic review of the mutual coupling in multiple-input multiple-output (MIMO) systems, including the effects on performances of MIMO systems and various decoupling techniques. The mutual coupling changes the antenna characteristics in an array, and therefore, degrades the system performance of the MIMO system and causes the spectral regrowth. Although the system performance can be partially improved by calibrating out the mutual coupling in the digital domain, it is more effective to use decoupling techniques (from the antenna point) to overcome the mutual coupling effects. Some popular decoupling techniques for MIMO systems (especially for massive MIMO base station antennas) are also presented.

Subfields: Aerospace Engineering, Computer Networks and Communications, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/dc967f5cddbbdaaa7083b6cbce918ff8895a54ac

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Aerospace Engineering

1. H. Vincent Poor
2. Dusist Niyato
3. Shuguang Cui
4. Derrick Wing Kwan Ng
5. Zhenyao He
6. Yonina C. Eldar
7. Bo Ai
8. Merouane Debbah

In Computer Networks and Communications

1. H. Vincent Poor
2. Khaled Ben Letaief
3. Merouane Debbah
4. Shuguang Cui
5. Dusist Niyato
6. Derrick Wing Kwan Ng
7. Yonina C. Eldar
8. Bo Ai

In Electrical and Electronic Engineering

1. H. Vincent Poor
2. Merouane Debbah
3. Rui Zhang
4. Khaled Ben Letaief
5. Shuguang Cui
6. Dusist Niyato
7. Derrick Wing Kwan Ng
8. Yonina C. Eldar

Citations in the corpus

• Full-Duplex Communication for ISAC: Joint Beamforming and Power Optimization (2022, methodology): “For the residual SI channel at the BS, we follow [18], [40] and model each entry of H SI ∈ C N r × N t as [ H SI ] p,q = q α SI p,q e − j 2 π dp,qλ , where α SI p,q > 0 and d p,q > 0 denote the residual SI channel power and the distance between the q -th transmit antenna and the p -th receive…”
• A Tutorial on Extremely Large-Scale MIMO for 6G: Fundamentals, Signal Processing, and Applications (2023, background): “• Mutual Coupling Property : When the antenna elements are closely packed with a small antenna spacing as in XL-MIMO, the mutual coupling property will significantly affect the practical design and system performance [67], [148].”
• Study on Mutual Coupling Reduction Technique for MIMO Antennas (2019, methodology): “Diagram of mutual coupling mechanism (a) Transmitting mode and (b) receiving mode [42].”
• Decoupling Between Extremely Closely Spaced Patch Antennas by Mode Cancellation Method (2021, background): “high isolation and a satisfactory MIMO performance [4]–[38].”